Elastic membrane



2.1 : Perspective

2.2 : Perspective

2.3 : Top

2.4 : Bottom

2.5 : Front

2.6 : Back

2.7 : Right

2.8 : Left

2.9 : Cross-sectional

2.10 : Enlarged

The parallel thin lines and radial thin lines in the representation represent contours only and do not illustrate ornamentation or decoration on the surfaces of the elastic membrane, which form no part of the claimed designs; the parts shown by means of broken lines in the reproductions are not part of the claimed designs; alternate long and short dash lines show only the boundary between the disclaimed part and the claimed part of the elastic membrane. 

CLAIM The ornamental design for elastic membrane, as shown and described. 